IRJET-Design and Analysis of Automotive Silencer for Effective Corrosion Control

International Research Journal of Engineering and Technology (IRJET)

e-ISSN: 2395 -0056

Volume: 03 Issue: 08 | Aug-2016

p-ISSN: 2395-0072

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Design and Analysis of Automotive Silencer for Effective Corrosion Control Kannan P 1, Jayaseelan V 2, Gopalakrishnan D 3, Ashok M 4 1Assistant

2,3,4 Final

Professor, Department of Mechanical Engineering, Jayam college of Engineering and Technology, Dharmapuri, Tamilnadu,

Year Student, Department of Mechanical Engineering, Jayam college of Engineering and Technology, Dharmapuri, Tamilnadu,

kannanmec87@gmail.com , 2 jayasmech23272@gmail.com, 3 gksvips2817@gmail.com , 4 ashokshok1996@gmail.com ---------------------------------------------------------------------***--------------------------------------------------------------------1

Abstract - Automobile silencers have the problem of

corrosion. So, corrosion resistant material should be used to

corrosion since its existence. So new corrosion resistant

avoid such circumstances. For that we’re selecting the best

materials are emerging day by day. Here, we use different

corrosive materials like Carbon fiber, glass fiber, stainless

corrosion resistant materials (Composites) for silencers and

steel and the presently used material Mild steel and compare

then they are analyzed and compared for different stresses

them with thermal and pressure load conditions and select

and strains produced in the silencer both pressure and thermal

best material which resists corrosion.

2. METHADOLOGY

loads. Then the materials are rated for their best usage. The existing material is Mild steel which is compared with our selected materials which are as follows Stainless steel, Carbon fiber and Glass fiber. We have selected these materials because of their high strength and their high resistant to corrosion.

These materials are analyzed in Ansys where there Stress, Strain and Deformation were analyzed and the best material is selected accordingly and rated for their best usage.

Key Words: Corrosion resistant material, fiber, Ansys

1. INTRODUCTION Fig 1 Flow diagram representing Methodology

Silencer is a device which is used to carry the exhaust gases from the combustion chamber to the atmosphere.

2.1 .PROBLEM IDENTIFICATION

Since it carries the exhaust gases it should be resistant to heat and should withstand pressure and resist corrosion.

The main problem behind the silencer failure is because of

Mostly, Silencer failure happens due to the effect of

the silencer corrosion. Corrosion in the silencer is caused

corrosion. It is due to the atmospheric conditions of our

due to the Environmental or atmospheric conditions and the

world and the acidic condensate deposit on silencer. These

deposit of acidic condensate in silencer.

condensates erode the silencer material and causes

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International Research Journal of Engineering and Technology (IRJET)

e-ISSN: 2395 -0056

Volume: 03 Issue: 08 | Aug-2016

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2.3. MATERIAL SELECTION The present material used in automobile silencer is Mild steel in which we’re going to analyze the load and thermal stresses.The materials that we’re going to analyze and compare with mild steel are Carbonfiber,Glass fiber, Stainless steel.We have selected carbon fiber because it have high corrosion resistance and it is 70% lighter than steel and Fig 2.1 Corroded silencer

it has low mass. We have selected glass fiber because it is resistant to corrosion and have high strength. We have

2.2 .DESIGN

selected stainless steel because it is the material which

We have designed the silencer in Creo Parametric

shows high resistant to corrosion.

2.0 and have Analysed in Ansys software. We took the

2.4. LOAD CONSIDERATION

dimens1ions of Splender Pro bike silencer since it is mostly used one. The cross sectional and modelled views of the

In silencer we have considered the fixed load on the top side

silencer are shown below.

of the silencer. This is because in Splender pro vehicle a clamp fixes the top side of the silencer as fixed to make the position of the silencer. so, Fixed load is considered here on the top side of the silencer.

2.5. THEORITICAL CALCULATION For the Splendor pro engine specifications, The theoretically Calculated temperature, Pressure and mass flow rate are as follows

Fig 2.2 Layout of silencer

Inlet Temperature of silencer,

The 3d Modelled and cross sectional views are as follows,

T1=803.90k Inlet pressure of silencer, P1 =2.687 bar Mass flow Rate, Mi= 0.036 kg/s Inlet Velocity of Silencer, Fig 2.4 3D Modelled view of silencer

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International Research Journal of Engineering and Technology (IRJET)

e-ISSN: 2395 -0056

Volume: 03 Issue: 08 | Aug-2016

p-ISSN: 2395-0072

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3. ANALYSIS We have analysed the materials that we have selected for manufacturing Silencer in Ansys Software and we have found the Various Stresses and Strains Acting on them and the deformation occurring on them.

MILD STEEL Fig 3.4 Stress in carbon fiber

Fig 3.1 Stress in Mild steel

Fig 3.5 Strain in Carbon fiber

Fig 3.2 Strain in Mild steel

Fig 3.6 Deformation in Carbon fiber STAINLESS STEEL

Fig 3.3 Deformation in Mild Steel CARBON FIBER Fig 3.7 Stress in Stainless Steel

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Fig 3.12 Deformation in Glass fiber

Fig 3.8 Strain in Stainless steel

4. RESULTS From the Analysed

figures the Stress Strain and

Deformation value for those materials are as follows,

TABLE-1 STAINLESS STEEL VALUES FROM ANSYS

Fig 3.9 Deformation of stainless steel GLASS FIBER

TABLE- 2 MILD STEEL VALUES FROM ANSYS

Fig 3.10 Stress in Glass fiber

Fig 3.11: Strain in Glass fiber

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6. REFERENCES

TABLE- 3 GLASS FIBER VALUES FROM ANSYS

[1] Davies, P.O.A.L., “The Design of Silencers for Internal Combustion Engine” Journal of sound and Vibration, Vol.1, No.2, pp. 185- 201.1964.

[2] Hoffmann C, et al, “ Pitting corrosion in the wet section of the automotive exhaust system”, JAMME, Vol 34, 2009.

[3] Na, W., Efraimsson, G., Boij, S., “Simulations of the scattering of sound waves at a sudden area expansionin

TABLE- 4 CARBON FIBER VALUES FROM ANSYS

a 3D duct”, 21st International Congress on Sound and Vibration (ICSV21), Beijing, China, 13-17 July2014.

[4] Patekar, V. P., Patil, R. B., “Vibrational Analysis of Automotive Exhaust Silencer Based on FEM,andFFT Analyzer”,

International

Journal

on

Emerging

Technologies 3(2), 2012, 1-3.

[5] Rajadurai S, et al. “ Materials for automotive exhaust system”, IJRDET, Vol 2,2014.

5.CONCLUSION

[6] Vinay Gupta, Dhananjay Singh, Dhirendra Singh &

Analysis results from testing the silencer under static load

Madan Mohan Mishra , “Vibrational analysis of exhaust

containing the stresses and deflection are listed in the Table.

muffler”, IJSER,2013.

[7] Yuvraj K Lavhale, et al., “ Overview of failure trend of

The materials we have analyze are mild steel, stainless steel,

inlet and exhaust valve”, IJMET, Vol 5, 2014.

glass fiber E-grade and carbon fiber.

In the analysis of silencer we have found that the carbon fiber silencer have a good strength and it have a less stress under the fixed support and force, than the other three material which are used for silencer. So the existing mild steel material can be replaced with optimized carbon fiber material because of its low deformation and elastic strain values. Compared to other optimized materials like glass fiber E-grade and stainless steel the carbon fiber has low stress value. So the suitable material for silencer is carbon fiber.

Even though Carbon fiber is costlier it should be used in manufacturing silencer since it shows the resistant to corrosion among the given materials.

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International Research Journal of Engineering and Technology (IRJET)

e-ISSN: 2395 -0056

Volume: 03 Issue: 08 | Aug-2016

p-ISSN: 2395-0072

www.irjet.net

BIOGRAPHIES KANNAN P 1 Assistant Professor, Department of Mechanical Engineering, Jayam college of Engineering and Technology, Dharmapuri, Tamilnadu,

Jayaseelan V 2 Final Year Student, Department of Mechanical Engineering, Jayam college of Engineering and Technology, Dharmapuri, Tamilnadu,

Gopalakrishnan D 3

Final Year Student, Department of Mechanical Engineering, Jayam college of Engineering and Technology, Dharmapuri, Tamilnadu,

Ashok M 4 Final Year Student, Department of Mechanical Engineering, Jayam college of Engineering and Technology, Dharmapuri, Tamilnadu,

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